An efficient handoff strategy for mobile computing checkpoint system

  • Authors:
  • Chaoguang Men;Zhenpeng Xu;Dongsheng Wang

  • Affiliations:
  • National Laboratory for Information Science and Technology, Tsinghua University, Beijing, China and Research Center of High Dependability Computing Technology, Harbin Engineering University, Harbi ...;Research Center of High Dependability Computing Technology, Harbin Engineering University, Harbin, Heilongjiang, P.R. China;National Laboratory for Information Science and Technology, Tsinghua University, Beijing, China and Research Center of High Dependability Computing Technology, Harbin Engineering University, Harbi ...

  • Venue:
  • EUC'07 Proceedings of the 2007 international conference on Embedded and ubiquitous computing
  • Year:
  • 2007

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Abstract

The Eager, Lazy and Movement-based strategies are used in mobile computing system when handoff. They result in performance loss while moving the whole checkpoint on fault-free or slow recovery while not moving any checkpoint until recovery. In the paper, a compromise strategy is proposed. The whole recovery information are broken into two parts, which one little part with high-priority should be transferred to the new cell during handoff and another large part with low-priority should be transferred only when the mobile host recovers from a fault. From the view of mobile host, it seems that all recovery information reside on the local mobile support station. The strategy guarantees little performance losing when fault-free and quick recovery when fault occurs. Experiments and analysis show the handoff strategy performance overcomes others.